WO2023011424A1 - Procédé de communication par relais, appareil de communication et système de communication - Google Patents

Procédé de communication par relais, appareil de communication et système de communication Download PDF

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Publication number
WO2023011424A1
WO2023011424A1 PCT/CN2022/109532 CN2022109532W WO2023011424A1 WO 2023011424 A1 WO2023011424 A1 WO 2023011424A1 CN 2022109532 W CN2022109532 W CN 2022109532W WO 2023011424 A1 WO2023011424 A1 WO 2023011424A1
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WIPO (PCT)
Prior art keywords
cell
terminal
information
access
relay
Prior art date
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PCT/CN2022/109532
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English (en)
Chinese (zh)
Inventor
方宇哲
彭文杰
王瑞
Original Assignee
华为技术有限公司
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to AU2022321483A priority Critical patent/AU2022321483A1/en
Priority to JP2024506873A priority patent/JP2024527154A/ja
Priority to EP22852136.5A priority patent/EP4373164A1/fr
Priority to BR112024002211A priority patent/BR112024002211A2/pt
Publication of WO2023011424A1 publication Critical patent/WO2023011424A1/fr
Priority to US18/431,387 priority patent/US20240179776A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/18—Management of setup rejection or failure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/10—Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/12—Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/005—Discovery of network devices, e.g. terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/04—Terminal devices adapted for relaying to or from another terminal or user
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/18—Interfaces between hierarchically similar devices between terminal devices

Definitions

  • the present application relates to the communication field, and in particular to a relay communication method, communication device and communication system.
  • a sidelink is a new link introduced to support direct communication between devices.
  • the sidelink includes direct adjacent service communication and adjacent service direct discovery between terminals, and corresponds to a wireless interface (for example, PC5).
  • a wireless interface for example, PC5
  • U2N relay user equipment-to-network relay
  • a remote terminal needs to access a cell of a network device through a relay terminal.
  • the remote terminal and the relay terminal can communicate through the sidelink, and the relay terminal and the network device can communicate through the uplink and downlink. Therefore, before the remote terminal establishes a sidelink with the relay terminal, it needs to select a suitable relay terminal from multiple relay terminals within the coverage area of the network device to complete cell access.
  • the remote terminal may evaluate whether the sidelink quality of the relay terminal satisfies the relay selection and reselection criteria by comparing the radio signal strength measurement value of the sidelink discovery message with a pre-configured threshold. How to improve the performance of the relay service is an urgent problem to be solved.
  • the present application provides a relay communication method, a communication device and a communication system, which effectively improve the efficiency of a remote terminal accessing a cell of a network device.
  • a relay communication method which is applied to a first terminal, and the first terminal is a relay device for a second terminal to access a network device, and the method includes: receiving a system information; determine according to the system information that the second terminal cannot camp on the first cell of the network device; send first indication information to the second terminal, where the first indication information is used to indicate disconnection of the The sidelink between the first terminal and the second terminal, or the first indication information is used to indicate that the second terminal cannot camp on the first cell.
  • the first terminal when it determines that it cannot camp on the first cell according to the received system information, it may send a sidelink disconnection notification to the second terminal through the sidelink established with the second terminal. message or forward the first cell state information and the first cell reservation state information in the system message, after the terminal device receives the above information, it can disconnect the sidelink, or according to the received cell state information, cell reservation Save at least one piece of information in the state information or its own access identification to determine whether it can camp on the first cell of the network device, so that the second terminal can re-access the second terminal under the condition that it can successfully camp on the first cell
  • One cell effectively avoids the problem that the second terminal cannot access the first cell through the first terminal when the first terminal can reside in the first cell, and improves the efficiency of the second terminal accessing network equipment.
  • the second terminal when the system information indicates that the first cell is in an access prohibited state, the second terminal cannot camp on the first cell of the network device.
  • the determining according to the system information that the second terminal cannot camp on the first cell of the network device includes: according to the system information and the determining the radio resource control RRC status information of the first terminal, and determining that the second terminal cannot camp on the first cell.
  • the system information includes first cell access status information
  • the first cell access status information includes information indicating that the first cell is prohibited from accessing. Incoming state information or non-access forbidden state information.
  • the system information further includes first cell reservation state information, and the first cell reservation state information is used to indicate the reservation of the first cell Status, wherein the reservation status includes one or more of the following:
  • the first cell is reserved for use by the operator, and the first cell is not used for other uses, or the first cell is not used for future use.
  • the RRC state information of the first terminal is used to indicate the RRC state of the first terminal.
  • the method further includes: disconnecting the sidelink.
  • a relay communication method which is applied to a first terminal, and the method includes: receiving system information from a network device; controlling RRC according to the system information and/or the radio resource of the first terminal Status information, determining relay status information of the first terminal, where the relay status information includes providing a relay service or not providing a relay service, and the relay service includes providing a relay service for the second terminal.
  • the first terminal when the first terminal can camp on the first cell, it forwards the first cell access status information and the first cell reservation status information in the system information from the network device to the second terminal, The second terminal can determine whether it can reside in the first cell according to the received information, and the second terminal can access the first cell after ensuring that it can successfully access the first cell, effectively avoiding the When the first terminal can reside in the first cell, the second terminal cannot access the first cell through the first terminal, which improves the efficiency of the second terminal's access to the network device.
  • the system information includes first cell access state information of the network device, and the first cell access state information includes a Information that a cell is in an access-forbidden state or information that is not in an access-forbidden state.
  • the system information further includes the first cell reservation status information, and the first cell reservation status information is used to indicate the status of the first cell.
  • Reserved state wherein the reserved state includes one or more of the following: the first cell is reserved for use by operators, the first cell is not used for other uses, or the first cell is not used for for future use.
  • the method further includes: when the relay state information of the first terminal includes providing a relay service, sending a first message, and the first terminal A message carries access status information of the first cell and reservation status information of the first cell, and/or information about whether the second terminal is allowed to camp on the first cell.
  • the method further includes: not sending the first message when the relay state information of the first terminal includes not providing a relay service.
  • the method further includes: receiving a request message from the second terminal, where the request message is used to discover the first terminal that provides the relay service, so The request message carries the access identifier AI of the second terminal; and according to the AI of the second terminal and the system information, determine whether to allow the second terminal to camp on the first cell.
  • a relay communication method which is applied to a second terminal, and the second terminal accesses a network device through a first terminal, and the method includes: receiving first indication information from the first terminal, the The first indication information is used to indicate disconnection of the sidelink between the first terminal and the second terminal, or the first indication information is used to indicate that the second terminal cannot camp on the The first cell of the network device; disconnecting the sidelink between the first terminal and the second terminal according to the first indication information.
  • the method before receiving the first indication information from the first terminal, the method further includes: establishing the sidelink.
  • the method further includes: selecting a third terminal or reselecting a second cell of the network device, where the third terminal is a relay device for connecting the second terminal to the network device.
  • a relay communication method which is applied to a second terminal, and the second terminal accesses a network device through a first terminal, the method comprising: receiving a first message from the first terminal, The first message carries the first cell access status information and the first cell reservation status information of the network device, and/or information about whether the second terminal is allowed to camp on the first cell; According to the first message, determine the capability information of the second terminal to camp on the first cell, and the capability information to camp on the first cell includes camping on the first cell or being unable to camp on the First district.
  • the access status information of the first cell includes information indicating that the first cell is in an access prohibited state or in a non-access prohibited state.
  • the reservation state information of the first cell is used to indicate the reservation state of the first cell, where the reservation state includes the following one or Multiple items: the first cell is reserved for use by the operator, the first cell is not used for other uses, or the first cell is not used for future use.
  • the method further includes: sending a request message to the first terminal, where the request message is used to discover the first terminal, and the request message carries the The access identity AI of the second terminal.
  • a communication device configured to execute the method in any possible implementation manner of the first aspect or the third aspect above.
  • the communication device includes a module configured to execute the method in any one of the foregoing aspects or any possible implementation manner of the third aspect.
  • the communication device may include modules corresponding to one-to-one execution of the methods/operations/steps/actions described in the first aspect or the third aspect above, and the modules may be hardware circuits, software, or It can be implemented by combining hardware circuits with software.
  • the communication device is a communication chip
  • the communication chip may include an input circuit or interface for sending information or data, and an output circuit or interface for receiving information or data.
  • the communications apparatus is a communications device that may include a transmitter for sending information or data, and a receiver for receiving information or data.
  • the communication device is used to execute the method in any possible implementation manner of the above-mentioned first aspect or the third aspect, and the communication device may be configured in a terminal, or the communication device itself is the above-mentioned first terminal .
  • another communication device configured to perform the method in any possible implementation manner of the second aspect or the fourth aspect above.
  • the communication device includes a module for executing the method in any possible implementation manner of the second aspect or the fourth aspect above.
  • the communication devices provided in the fifth aspect and the sixth aspect may include modules corresponding to one-to-one execution of the methods/operations/steps/actions described in the above aspects.
  • the modules may be hardware circuits or Software can also be realized by combining hardware circuits with software.
  • the above-mentioned communication device is a communication chip
  • the communication chip may include an input circuit or interface for sending information or data, and an output circuit or interface for receiving information or data.
  • the communication described above is a communication device, and the communication device may include a transmitter for sending information or data, and a receiver for receiving information or data.
  • the communication device is used to execute the method in any possible implementation manner of the above-mentioned second aspect or the fourth aspect, and the communication device may be configured in a terminal, or the communication device itself is the above-mentioned second terminal .
  • a processor including: an input circuit, an output circuit, and a processing circuit.
  • the processing circuit is configured to receive a signal through the input circuit, and transmit a signal through the output circuit, so that the processor executes the method in any possible implementation manner in any of the foregoing aspects.
  • processors there are one or more processors, and one or more memories.
  • the memory may be integrated with the processor, or the memory may be separated from the processor.
  • the memory can be a non-transitory (non-transitory) memory, such as a read-only memory (read only memory, ROM), which can be integrated with the processor on the same chip, or can be respectively arranged in different On the chip, the embodiment of the present application does not limit the type of the memory and the configuration of the memory and the processor.
  • a non-transitory memory such as a read-only memory (read only memory, ROM)
  • ROM read only memory
  • the communication device in the seventh aspect above can be a chip, and the processor can be implemented by hardware or by software.
  • the processor can be a logic circuit, an integrated circuit, etc.; when implemented by software
  • the processor may be a general-purpose processor, which is realized by reading the software code stored in the memory, and the memory may be integrated in the processor, or it may be located outside the processor and exist independently.
  • a computer program product includes: a computer program (also referred to as code, or instruction), which, when the computer program is run, causes the computer to perform any of the possible implementations in any of the above aspects. methods in methods.
  • a computer program also referred to as code, or instruction
  • a computer-readable storage medium stores a computer program (also referred to as code, or an instruction) which, when run on a computer, causes the computer to perform any of the above-mentioned aspects.
  • a computer program also referred to as code, or an instruction
  • a chip system in a tenth aspect, includes a processor, configured to implement the method involved in the above-mentioned first aspect or any possible implementation manner of the first aspect, or to implement any of the above-mentioned aspects The methods involved in any of the possible implementations.
  • system-on-a-chip further includes a memory for storing program instructions.
  • the system-on-a-chip may consist of chips, or may include chips and other discrete devices.
  • FIG. 1 is a schematic diagram of a communication system provided by an embodiment of the present application.
  • FIG. 2 is a schematic flowchart of a relay communication method provided by an embodiment of the present application
  • FIG. 3 is a schematic flow chart of another relay communication method provided by an embodiment of the present application.
  • FIG. 4 is a schematic flowchart of another relay communication method provided by the embodiment of the present application.
  • FIG. 5 is a schematic block diagram of a communication device provided by an embodiment of the present application.
  • Fig. 6 is a schematic block diagram of another communication device provided by an embodiment of the present application.
  • LTE long term evolution
  • FDD frequency division duplex
  • TDD time division duplex
  • UMTS universal mobile telecommunications system
  • 5th generation, 5G fifth generation mobile communication system
  • new radio new radio, NR
  • the terminal in the embodiment of the present application may also be referred to as: user equipment (user equipment, UE), mobile station (mobile station, MS), mobile terminal (mobile terminal, MT), access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.
  • user equipment user equipment
  • MS mobile station
  • MS mobile terminal
  • MT mobile terminal
  • access terminal subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.
  • a terminal may be a device that provides voice/data connectivity to a user, for example, a handheld device with a wireless connection function, a vehicle-mounted device, and the like.
  • some terminals include: mobile phone (mobile phone), tablet computer, notebook computer, palmtop computer, mobile Internet device (mobile internet device, MID), wearable device, virtual reality (virtual reality, VR) equipment, augmented reality (augmented reality, AR) equipment, wireless terminals in industrial control, wireless terminals in self driving, wireless terminals in remote medical surgery, smart grid Wireless terminals in transportation safety, wireless terminals in smart city, wireless terminals in smart home, cellular phones, cordless phones, session initiation protocol , SIP) telephone, wireless local loop (wireless local loop, WLL) station, personal digital assistant (personal digital assistant, PDA), handheld device with wireless communication function, computing device or other processing device connected to a wireless modem, vehicle Devices, wearable devices, terminals in the 5G network or terminals in the future evolving public land mobile network (PLMN), etc., are not limited in
  • the terminal may be a terminal in an Internet of Things (Internet of Things, IoT) system.
  • IoT Internet of Things
  • the Internet of Things is an important part of the development of information technology in the future. Its main technical feature is to connect objects to the network through communication technology, so as to realize the intelligent network of man-machine interconnection and object interconnection.
  • the terminal in the embodiment of the present application may be a wearable device.
  • Wearable devices can also be called wearable smart devices, which is a general term for the application of wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes.
  • a wearable device is a portable device that can be worn directly on the body or integrated into the user's clothing or accessories.
  • Wearable devices are not only a hardware device, but also can achieve powerful functions through software support, data interaction, and cloud interaction.
  • Generalized wearable smart devices include full-featured, large-sized, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, etc., and only focus on a certain type of application functions, and need to cooperate with other devices such as smart phones Use, such as various smart bracelets and smart jewelry for physical sign monitoring.
  • the terminal may also be a terminal in machine type communication (machine type communication, MTC).
  • the terminal can also be an on-board module, on-board module, on-board component, on-board chip, or on-board unit built into the vehicle as one or more components or units. Components, on-board chips, or on-board units can implement the methods provided in this application.
  • the embodiments of the present application can also be applied to the Internet of Vehicles, such as vehicle to everything (V2X), vehicle-to-vehicle communication long-term evolution technology (long term evolution-vehicle, LTE-V), vehicle-to-vehicle (vehicle-to-vehicle vehicle, V2V) technology, etc.
  • V2X vehicle to everything
  • LTE-V long term evolution-vehicle
  • V2V vehicle-to-vehicle vehicle-to-vehicle vehicle, V2V
  • the network device involved in this application may be a device for communicating with a terminal, and the network device may also be called an access network device or a wireless access network device, and it may be a transmission reception point (TRP), or an LTE
  • the evolved base station (evolved NodeB, eNB or eNodeB) in the system can also be a home base station (for example, home evolved NodeB, or home Node B, HNB), a base band unit (base band unit, BBU), or a cloud wireless
  • the wireless controller in the access network (cloud radio access network, CRAN) scenario, or the network device can be a relay station, an access point, a vehicle device, a wearable device, and a network device in a 5G network or a future evolved PLMN network It can also be the access point (access point, AP) in the WLAN, or the gNB in the NR system.
  • the above-mentioned network equipment can also be a city base station, a micro base station, a pico
  • the network device may include a centralized unit (centralized unit, CU) node, or a distributed unit (distributed unit, DU) node, or a wireless access network (radio access network, including a CU node and a DU node, RAN) device, or a RAN device including a control plane CU node (CU-CP node), a user plane CU node (CU-UP node) and a DU node.
  • CU-CP node control plane CU node
  • CU-UP node user plane CU node
  • the network device provides services for the cell, and the terminal communicates with the cell through the transmission resources (for example, frequency domain resources, or spectrum resources) allocated by the network device.
  • the cell may belong to a macro base station (for example, a macro eNB or a macro gNB, etc.), It may also belong to a base station corresponding to a small cell, where the small cell may include: a metro cell, a micro cell, a pico cell, a femto cell, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.
  • FIG. 1 is a schematic diagram of a communication system 100 provided by an embodiment of the present application.
  • the communication system 100 includes a network device 110 , a terminal 120 and a terminal 130 .
  • the terminal 120 is located within the coverage area of the cell of the network device 110, and the terminal 130 may be located within the coverage area of the cell, or may be located outside the coverage area of the cell.
  • the terminal 120 communicates with the network device 110 through uplink and downlink.
  • the terminal 130 may communicate with the network device 110 through the terminal 120 , and at this time, there is a sidelink (sidelink) connection between the terminal 120 and the terminal 130 .
  • sidelink sidelink
  • a terminal especially refers to a device capable of sidelink communication, and is divided into two types: terminal 120 (relay terminal) and terminal 130 (remote terminal).
  • the relay terminal is a terminal that supports the provision of relay services and provides relay services for the terminal 130. Specifically, it can receive uplink data from the terminal 130 and relay it to the network device, and can receive downlink data from the network device and relay it to the terminal 130.
  • the remote terminal is a terminal that supports access to the network device through the relay service.
  • FIG. 1 is only a simplified schematic diagram for easy understanding, and the communication system 100 may further include other devices, which are not shown in FIG. 1 .
  • the above-mentioned relay terminal is a relay device for providing a relay service, and may also be a relay module or a relay unit, which is not limited in this application.
  • a relay terminal is used as a relay device as an example for description.
  • relay discovery relay discovery
  • model A the relay terminal broadcasts its own discovery messages, which can then be read and processed by interested remote terminals to determine whether a sidelink can be established between the two.
  • model B the remote terminal sends request information about receiving a response from the relay terminal, and the surrounding relay terminals will decide whether to respond after receiving the information, so as to further determine whether a sidelink can be established between the two.
  • sidelink is a new link introduced to support direct communication between devices, and can be applied to device-to-device (devcie-to-device, D2D) application scenarios, and vehicle-to-everything (V2X) )field.
  • Sidelink includes direct communication of adjacent services and direct discovery of adjacent services between terminals, corresponding to the PC5 interface.
  • the above-mentioned link between the relay terminal and the network device corresponds to a Uu interface, and may also be called a Uu network.
  • the relay terminal when the terminal 120 (relay terminal) performs uplink and downlink communication with the network device 110, the relay terminal needs to be able to access the cell corresponding to the network device. Specifically, whether the terminal can access the cell corresponding to the network device may be determined according to a system message sent by the network device to the terminal.
  • the system information (system information, SI) may include a master information block (master information block, MIB) and multiple system information blocks (system information block, SIB).
  • the MIB can be transmitted on a broadcast channel (broadcasting channel, BCH) at a period of 80 milliseconds (milliseconds, ms), and repeated within 80 ms, and the MIB includes a limited number of the most important and most commonly used transmission parameters, obtained from the cell Parameters required by SIB1.
  • the MIB also includes indication information such as a system frame number (system frame number, SFN) and whether a cell is barred (cellBarred).
  • SIB 1 is transmitted on a downlink shared channel (DL-SCH), with a period of 160ms, and the transmission repetition period can be changed within 160ms.
  • the default transmission repetition period of SIB1 is 20ms, but the actual transmission repetition period depends on the network implementation.
  • SIB1 includes information about the availability and scheduling of other SIBs (eg, SIB to SI message mapping, periodicity, SI window size) and indicates whether one or more SIBs are available only on demand.
  • SIB1 is a cell-specific SIB.
  • system information may include cell access status information, cell reservation status information, or other information, which is not limited in this application.
  • the terminal may first perform public land mobile network (public land mobile network, PLMN) selection, and after the evaluation process of cell selection or reselection, try to select and camp on a suitable cell.
  • a suitable cell means that the cell indicated by the network in the MIB is not prohibited, and at the same time, it is not considered prohibited by the terminal to its own access identity (AI) and the cell status broadcast in SIB1.
  • the signaling cellBarred in the MIB is used to indicate whether the cell is barred, and the cell type is "barred” or “not barred”.
  • cellBarred is set to "barred” if the terminal is in the RRC_IDLE or RRC_INACTIVE state, it will perform cell reselection.
  • SIB1 there is an information element parameter related to whether the terminal regards the cell as prohibited, for example, cellReservedForOperatorUse (the information element type is "reserved” or “not reserved”): multiple PLMNs or NPNs are indicated in SIB1, the Fields are specified per PLMN or Standalone non-public network (SNPN).
  • cellReservedForOtherUse (cell type is "true"): If there are multiple PLMNs indicated in SIB1, this field is common to all PLMNs.
  • cellReservedForFutureUse (cell type is "true): If there are multiple PLMNs or NPNs indicated in SIB1, this field is common to all PLMNs and NPNs.
  • CAG-ID closed access group identifier
  • NID network identifier
  • the cell status indication is "not barred” and “reserved” for the operator to use for any PLMN/SNPN, but not “true” for other purposes, and not “true” for future use: if the field cell of the PLMN Reserved for operator use is set to "reserved”, then a UE assigned to an Access Identity 11 or 15 operating in its HPLMN/EHPLMN shall consider this cell as a candidate cell during cell selection and reselection procedures. If the field cellReserveForOperatorUse of the selected/registered SNPN is set to "reserved", the UE assigned to access identity 11 or 15 shall consider this cell as a candidate cell during cell selection and reselection procedures. UEs assigned to access identities 0, 1, 2 and 12 to 14 see the cell status as "barred”.
  • the relay terminal selection criteria are as follows: the remote terminal compares the PC5 radio measurement value of the relay terminal with gNB configured or pre-configured thresholds. The remote terminal uses the wireless signal strength measurement of the discovery message of the sidelink to evaluate whether the PC5 link quality of the relay terminal meets the relay selection and reselection criteria. When the remote terminal is connected to the relay terminal, it can use the SL-RSRP measurement on the sidelink unicast link to evaluate whether the quality of the PC5 link with the relay terminal meets the reselection criteria of the relay.
  • Relay reselection should be triggered if the NR sidelink signal strength of the current sidelink relay is below a (preconfigured) threshold.
  • the remote terminal detects an RLF connection with the PC5 of the current relay terminal, it can re-trigger relay reselection.
  • the remote terminal also needs to consider higher layer criteria to select relays or reselect. Relay selection or reselection can be triggered by the upper layer of the remote terminal.
  • relay selection or reselection when the remote terminal has multiple suitable relay terminals as candidates that satisfy all AS layer and higher-level criteria, and the remote terminal needs to select a relay terminal by itself, the selection of a relay terminal depends on Remote terminal implementation.
  • the foregoing manner of selecting a relay terminal only takes into account the wireless signal strengths of the compared cells. If the cell state changes or there are some special settings, for example, when the relay terminal is in the RRC_CONNECTED state, the cell state in the MIB is set to "barred", then other remote terminals cannot pass through the relay at this time. The terminal accesses the candidate cell.
  • the relay terminal If the SIB1 cell information cellReservedForOperatorUse of the cell is set to "reserved", and the access ID assigned by the relay terminal is one of 11 or 15, the relay terminal considers that the cell is not prohibited, and the access of the remote terminal If the identifier is assigned as one of 0, 1, 2, 12-14, the remote terminal considers the cell to be prohibited, that is, the relay terminal regards the cell as not prohibited, but the remote terminal regards the cell as prohibited and cannot reside. If the remote terminal takes the relay terminal as a candidate and tries to establish a PC5 link with the relay terminal, when the relay terminal forwards the system message, the remote terminal will find that the cell cannot be camped on data transmission.
  • the present application provides a relay communication method, communication device, and communication system.
  • the relay terminal determines according to the system information that the remote terminal cannot reside in the network
  • the relay terminal send information to the remote terminal to disconnect the sidelink link, or before the sidelink link is established between the remote terminal and the relay terminal, connect the first cell in the system information received by the relay terminal.
  • the incoming status information and the reserved status information of the first cell are forwarded to the remote terminal, so that the remote terminal determines whether it can maintain a side connection with the relay terminal or whether it can camp on the network device through the relay terminal based on the received information
  • the first cell so that the remote terminal can re-access the first cell under the condition that it can successfully camp on the first cell, which effectively improves the efficiency of the remote terminal to access the first cell.
  • the relay communication method provided in this application can be applied to the communication system shown in FIG. 1 , and can also be applied to other communication systems, which is not limited in this embodiment of the application.
  • the following describes the relay communication method provided by the embodiment of the present application in detail in combination with two scenarios. It should be understood that the relay terminal in FIG. 1 may also be called a first terminal, and the remote terminal in FIG. 1 may also be called a second terminal, which is not limited in the present application.
  • Fig. 2 is a schematic flowchart of a relay communication method provided by an embodiment of the present application. As shown in FIG. 2, the method 200 may include the following steps:
  • the network device sends system information to the first terminal.
  • the first terminal receives the system information.
  • the foregoing system information may include first cell access status information and/or first cell reservation status information of the network device.
  • the access status information of the first cell includes information indicating that the first cell is in an access prohibited state or information in a non-access prohibited state.
  • the first cell reservation state information is used to indicate the reservation state of the first cell.
  • reservation state information of the first cell may further include other information, and the reservation state of the first cell may include the first reservation state.
  • the first reservation status can be understood as indicating information associated with cell reservation, for example, the first reservation status can be that the first cell is reserved for use by operators, and the first cell is not for other use, or the first cell is not for future use.
  • the reservation state may include at least one of the following: the first cell is reserved for use by an operator, the first cell is not for other uses, or the first cell is not for future use.
  • first cell may be a cell where the first terminal resides.
  • system information may also include access status information of other cells and/or reservation status information of other cells of the network device.
  • the foregoing system information may include MIB and/or SIB1.
  • the cellbarred parameter in the MIB is set to "barred", which means that the first cell is in an access-barred state, which means that no terminal device is allowed to access the first cell.
  • the cellbarred parameter in the MIB is set to "not barred", indicating that the current cell is in a non-barred access state, which means that any terminal device is allowed to access the first cell.
  • the cellReservedForOperatorUse parameter setting in SIB1 is set to "reserved", indicating that the first cell is reserved for use by the operator, cellReservedForOtherUse is not “true”, indicating that the first cell is not for other uses, and cellReservedForFutureUse is not "true ", indicating that the first cell is not for future use.
  • the first terminal sends the first indication information, or the first cell access state information and the first cell reservation state information to the second terminal according to the received system information.
  • the above first indication information is used to indicate disconnection of the sidelink between the first terminal and the second terminal, or the first indication information is used to indicate that the second terminal cannot camp on the first cell.
  • the first terminal may send the first indication information or the second type of information to the second terminal through the sidelink.
  • the second terminal when the access status information of the first cell in the foregoing system information indicates that the first cell is in an access prohibited state, the second terminal cannot camp on the first cell.
  • the first terminal sends to the second terminal a message of disconnecting the sidelink, or information indicating that the first cell is in a state of prohibiting access (that is, the second The terminal cannot camp on the first cell).
  • the second terminal receives the message of disconnecting the sidelink, or the information that the first cell is in an access prohibited state.
  • the first cell access state information in the system information indicates that the first cell is in a non-access prohibited state
  • the first cell reservation state information in the system information indicates that the reservation state of the first cell is the first reservation state
  • the RRC status information of the first terminal indicates that the RRC of the first terminal is in a non-connected state and the access identity (AI) of the first terminal is in range 1 or belongs to set 1
  • the first terminal cannot camp on the first cell.
  • the first terminal sends a message of disconnecting the sidelink to the second terminal.
  • the second terminal receives the message of disconnecting the sidelink.
  • Set 1 or range 1 in this embodiment of the present application may include terminals whose AI is 0, 1, 2, 12-14.
  • the first terminal and the second terminal may continue to maintain the sidelink connection, and the first terminal performs cell reselection.
  • the first terminal selects and When camping on the second cell of the network device, resend the cell access status information and cell reservation status information of the second cell to the second terminal, and the second terminal judges whether it can camp on the second cell according to the received information .
  • the second cell refers to a cell that is different from the first cell where the first terminal can reside or access, and it may be another cell (except the first cell) of the same network device, or it may be another cell of the network device
  • the cell of the device is not limited in this application.
  • the above-mentioned message of disconnecting the sidelink includes an identity document (identity document, ID) of the first terminal and/or identification information of the serving cell where the first terminal is located, identification information of the second terminal, a process identification and Information indicating that the sidelink connection is marked as disconnected.
  • the cellbarred parameter in the MIB included in the system information is set to "barred", indicating that the first cell is in a barred state, that is, the first cell access state information in the system information indicates that the first cell is in a barred state. state.
  • the aforementioned RRC being in a non-connected state includes that the RRC is in an idle state or a deactivated state, that is, RRC_IDLE or RRC_INACTIVE.
  • the aforementioned RRC is in a connected state, that is, RRC_CONNECTED.
  • the access state information of the first cell in the system information may be carried in the MIB.
  • the first cell access state information in the system information indicates that the first cell is in an access prohibited state
  • the RRC state information of the first terminal indicates that the RRC of the first terminal is in a connected state.
  • the first terminal remains connected to the first cell.
  • the first terminal may send the access state information of the first cell in the system information to the second terminal.
  • the second terminal receives the information.
  • the first cell access state information in the system information indicates that the first cell is in a non-access prohibited state
  • the first cell reservation state information in the system information indicates that the reserved state of the first cell is the first reserved state
  • the first terminal remains connected to the first cell (or the first terminal may camp on the first cell). community).
  • the first terminal may send the first cell access status information and the first cell reservation status information to the second terminal.
  • the second terminal receives the information.
  • the first cell reservation state information in the system information may be carried in SIB1.
  • the second terminal maintains the sidelink connection or disconnects the sidelink connection according to the received information.
  • the second terminal when the second terminal receives the message of disconnecting the sidelink, or the first cell access state information (indicating that the first cell is in a prohibited access state), disconnect the sidelink with the first terminal .
  • the second terminal may start to compare reference signal received power (reference signal received power, RSRP) and For the SL-RSRP of other terminals (not including the first terminal), select the second cell with the largest RSRP to try to establish a connection or the third terminal with the largest SL-RSRP to retry to establish a sidelink.
  • reference signal received power reference signal received power
  • the second terminal when the second terminal receives the access state information of the first cell (indicating that the first cell is in a non-access prohibited state) and the reserved state information of the first cell, it determines the second terminal according to the received information and its own AI. Whether the second terminal can reside in the first cell.
  • the foregoing determination of whether the second terminal can camp on the first cell may be understood as: the second terminal cannot camp on the first cell of the network device or the first terminal and the second terminal continue to maintain a sidelink connection.
  • the first cell access state information indicates that the first cell is in a non-access prohibited state
  • the first cell reservation state information indicates that the reservation state of the first cell is the first reservation state
  • the second terminal's When the AI is in range 1 or belongs to set 1, the second terminal cannot camp on the first cell of the network device.
  • the first cell access state information indicates that the first cell is in a non-access prohibited state
  • the first cell reservation state information indicates that the reservation state of the first cell is the first reservation state
  • the second terminal's When the AI is 11 or 15, the second terminal can camp on the first cell of the network device, and can maintain the sidelink connection.
  • the settings of the parameters are: the cellbarred parameter is set to “not barred”, and the cellReservedForOperatorUse parameter is set to “reserved” , cellReservedForOtherUse is not “true”, cellReservedForFutureUse is not “true”, and the AI of the second terminal is in range 1 or set 1, the second terminal cannot reside in the first cell, disconnects the sidelink, and performs cell reconfiguration election or relay re-election.
  • the settings of the parameters in the first cell access status information and the first cell reservation status information received by the second terminal are: the cellbarred parameter is set to “not barred”, the cellReservedForOperatorUse parameter is set to “reserved “, cellReservedForOtherUse is not “true”, cellReservedForFutureUse is not “true”, and the AI of the second terminal is 11 or 15, the second terminal can reside in the first cell.
  • the first terminal when it determines that it cannot camp on the first cell according to the received system information, it may send a sidelink disconnection notification to the second terminal through the sidelink established with the second terminal. message or forward the first cell state information and the first cell reservation state information in the system message, after the terminal device receives the above information, it can disconnect the sidelink, or according to the received cell state information, cell reservation Save at least one piece of information in the state information or its own access identification to determine whether it can camp on the first cell of the network device, so that the second terminal can re-access the second terminal under the condition that it can successfully camp on the first cell
  • One cell effectively avoids the problem that the second terminal cannot access the first cell through the first terminal when the first terminal can reside in the first cell, and improves the efficiency of the second terminal accessing network equipment.
  • Fig. 3 is a schematic flowchart of another relay communication method provided by an embodiment of the present application. As shown in FIG. 3, the method 300 may include the following steps:
  • the first terminal determines relay state information of the first terminal according to received system information and/or RRC state information of the first terminal.
  • the above relay state information includes providing relay service or not providing relay service.
  • the relay service includes providing the relay service for the second terminal.
  • the first terminal in the case that the first terminal can provide the relay service for the second terminal, the first terminal sends a first message, which may also be called a discovery message or a response message.
  • a first message which may also be called a discovery message or a response message.
  • the first terminal does not send the first message.
  • the first message sent to the second terminal is called a response message.
  • the first message actively sent by the first terminal according to its own relay service state information is called a discovery message.
  • S302 may be an optional step, that is, after S301 is executed, S303 may be continued, that is, after the first terminal receives the system information, it sends a discovery message to the second terminal or does not send a discovery message. It should be understood that whether the first terminal sends the information may be determined by the first terminal according to its own status information or other information, or determined according to S302 shown in this application, which is not limited in this application.
  • S303 send a discovery message to the second terminal.
  • the first terminal and the first cell Keep the connection (that is, the first terminal can provide the relay service for the second terminal).
  • the first terminal can send a discovery message, and the discovery message carries the access state information of the first cell.
  • the second terminal receives the discovery message.
  • the first cell access state information in the system information indicates that the first cell is in a non-access prohibited state
  • the first cell reservation state information in the system information indicates that the reservation state of the first cell is the first reservation state
  • the first terminal can camp on the first cell (that is, the first terminal can provide relay service).
  • the first terminal can send a discovery message, and carry the first cell access status information and the first cell reservation status information in the discovery message .
  • the second terminal receives the discovery message.
  • discovery message may be sent in a broadcast, unicast or multicast manner, which is not limited in this application.
  • the first cell access state information in the system information indicates that the first cell is in an access prohibited state
  • the RRC state information of the first terminal indicates that the RRC of the first terminal is in a disconnected state
  • it is determined that the first terminal cannot camp in the first cell that is, the first terminal cannot provide the relay service for the second terminal.
  • the first terminal may perform cell reselection without sending a discovery message.
  • the first cell access state information in the system information indicates that the first cell is in a non-access prohibited state
  • the first cell reservation state information in the system information indicates that the reservation state of the first cell is the first reservation state
  • the RRC state information of the first terminal indicates that the RRC of the first terminal is in the non-connected state and the AI of the first terminal is in range 1 or set 1
  • the first terminal may perform cell reselection without sending a discovery message.
  • the corresponding RRC state when the above-mentioned RRC is in the non-connected state includes that the RRC is in the idle state or the deactivated state, the corresponding RRC state is RRC_IDLE or RRC_INACTIVE. When the above RRC is in the connected state, the corresponding RRC state is RRC_CONNECTED.
  • the access state information of the first cell in the system information may be carried in the MIB.
  • the first cell reservation state information in the system information may be carried in SIB1.
  • the above process of cell reselection may be that the first terminal reselects other cells of the network device corresponding to the first cell except the first cell, or reselects cells of other network devices, which is not limited in this application.
  • the second terminal determines the capability information of camping on the first cell according to the information carried in the received first message.
  • the capability information of camping on the first cell includes camping on the first cell, or being unable to camp on the first cell.
  • the second terminal cannot camp on the first cell of the network device.
  • the first cell access state information carried in the discovery message indicates that the first cell is in a non-access prohibited state
  • the first cell reservation state information indicates that the reservation state of the first cell is the first reservation state
  • the AI of the second terminal is in range 1 or set 1, the second terminal cannot camp on the first cell of the network device.
  • the first cell access state information carried in the discovery message indicates that the first cell is in a non-access prohibited state
  • the first cell reservation state information indicates that the reservation state of the first cell is the first reservation state
  • the AI of the second terminal is 11 or 15, the second terminal may camp on the first cell of the network device.
  • the access status information of the first cell carried in the discovery message received by the second terminal indicates that the first cell is in an access prohibited state, or if the discovery message from the first terminal is not received, the first cell is not The cell and the first terminal serve as candidate cells and terminals for accessing the network device.
  • the second terminal may reselect a cell or reselect another terminal that can provide the relay service.
  • a sidelink link can be established between the second terminal and the first terminal, and then access the first cell.
  • the first terminal when the first terminal can camp on the first cell, it forwards the first cell access status information and the first cell reservation status information in the system information from the network device to the second terminal, The second terminal can determine whether it can reside in the first cell according to the received information, and the second terminal can access the first cell after ensuring that it can successfully access the first cell, effectively avoiding the When the first terminal can reside in the first cell, the second terminal cannot access the first cell through the first terminal, which improves the efficiency of the second terminal's access to the network device.
  • FIG. 4 is a schematic flowchart of another relay communication method provided by an embodiment of the present application. As shown in FIG. 4, the method 400 may include the following steps:
  • S402 may be an optional step, that is to say, S403 and S404 may be continuously executed after S401 is executed. It should be understood that whether the first terminal sends a response message may be determined by the first terminal according to its own status information or other information, or determined according to S402 shown in this application, which is not limited in this application.
  • the second terminal sends a request message.
  • the first terminal receives the request message.
  • the above request message may be sent in a broadcast, unicast or multicast manner, which is not limited in this application.
  • the request message sent by the second terminal may carry the AI of the second terminal.
  • the first terminal sends a response message or does not send a response message according to the system information; or if the first terminal can provide the relay service for the second terminal, the first terminal sends a response message according to the received system information and request message. Respond to the message.
  • the second terminal receives the response message.
  • the response message includes the identity of the second terminal or other information, so that when the second terminal receives the response information, it can be determined that it is a response message replied by the first terminal based on the above request information.
  • the first terminal can provide the relay service for the second terminal, and the first terminal sends a response message, and the response message carries the first cell access status information and the first cell reservation status information.
  • the first terminal when the request message sent by the second terminal carries the AI of the second terminal, and the first terminal can provide the relay service for the second terminal, the first terminal, according to the received system information and the AI of the second terminal, Determine whether the second terminal can camp on the first cell of the network device, and send a response message to the second terminal, and the response message carries information about whether the second terminal can camp on the first cell.
  • the second terminal receives the response message.
  • the foregoing determination of whether the second terminal can camp on the first cell of the network device may be understood as: the second terminal can camp on the first cell of the network device, or the second terminal cannot camp on the first cell of the network device.
  • the first cell access state information carried in the system information indicates that the first cell is in a non-access prohibited state
  • the first cell reservation state information indicates that the reservation state of the first cell is the first reservation state
  • the AI of the second terminal is in range 1 or set 1
  • the second terminal cannot camp on the first cell of the network device
  • the response message carries information that the second terminal cannot camp on the first cell.
  • the first cell access state information carried in the system information indicates that the first cell is in a non-access prohibited state
  • the first cell reservation state information indicates that the reservation state of the first cell is the first reservation state
  • the AI of the second terminal is 11 or 15
  • the second terminal can camp on the first cell of the network device
  • the response message carries information that the second terminal can camp on the first cell.
  • the second terminal determines the capability information of camping on the first cell according to the information carried in the received response message.
  • the capability information of camping on the first cell includes camping on the first cell, or being unable to camp on the first cell.
  • the process of determining the capability information of the second terminal camping on the first cell can refer to the above method 300 to determine the first terminal camping on the second cell.
  • the relevant description of the capability information of a cell will not be repeated here.
  • the access state information of the first cell carried in the response message received by the second terminal indicates that the first cell is in an access prohibited state, or if the response message from the first terminal is not received, the first cell is not
  • the cell and the first terminal serve as candidate cells and terminals for accessing the network device.
  • the second terminal may reselect a cell or reselect another terminal that can provide the relay service.
  • the second terminal carries its own AI in the request message and sends it to the first terminal, and the first terminal judges the second terminal's AI based on the AI of the second terminal in the received request message and the system information from the network device. Whether the first cell can be camped on, and the judgment result is carried in the response message and sent to the second terminal, so that the second terminal can determine whether to camp on the first cell through the first terminal according to the received judgment result, effectively avoiding the second terminal.
  • the second terminal cannot access the first cell through the first terminal, which improves the efficiency of the second terminal's access to network equipment.
  • sequence numbers of the processes in the above method 400 do not mean the order of execution, and the execution order of the processes should be determined by their functions and internal logic, and should not constitute any limitation to the implementation process of the embodiment of the present application.
  • S403 may be performed before S401, or after S401 and before S403, which is not limited in this application.
  • the relay communication method according to the embodiment of the present application is described in detail above with reference to FIG. 2 to FIG. 4 , and the communication device according to the embodiment of the present application will be described in detail below with reference to FIG. 5 and FIG. 6 .
  • FIG. 5 shows a communication device 500 provided by an embodiment of the present application.
  • the communication device 500 includes: a transceiver module 510 and a processing module 520 .
  • the communications apparatus 500 is a first terminal, or a chip in the first terminal.
  • the transceiver module 510 is configured to receive system information from the network device; the processing module 520 is configured to determine, according to the system information, that the second terminal cannot reside on the second terminal of the network device A cell; the transceiver module 510 is further configured to: send first indication information to the second terminal, where the first indication information is used to indicate disconnection of the sidelink between the first terminal and the second terminal or, the first indication information is used to indicate that the second terminal cannot camp on the first cell.
  • the second terminal cannot camp on the first cell of the network device.
  • the processing module 520 is further configured to: according to the system information and the radio resource control RRC state information of the first terminal, determine that the second terminal cannot camp on the first cell.
  • the system information includes access status information of the first cell, and the access status information of the first cell includes information indicating that the first cell is in an access-forbidden state or in a non-access-forbidden state .
  • the system information further includes first cell reservation state information, where the first cell reservation state information is used to indicate the reservation state of the first cell, where the reservation state includes one of the following: One or more items: the first cell is reserved for use by an operator, the first cell is not used for other uses, or the first cell is not used for future use.
  • the RRC state information of the first terminal is used to indicate the RRC state of the first terminal.
  • processing module 520 is further configured to: disconnect the side link.
  • the transceiver module 510 is configured to receive system information from a network device; the processing module 520 is configured to determine the set The relay state information of the first terminal, the relay state information includes providing a relay service or not providing a relay service, and the relay service includes providing a relay service for a second terminal.
  • the system information includes first cell access status information of the network device, and the first cell access status information includes information indicating that the first cell is in a prohibited access state or is not prohibited. Access status information.
  • the system information further includes the first cell reservation state information, and the first cell reservation state information is used to indicate the reservation state of the first cell, where the reservation state includes One or more of the following: the first cell is reserved for use by an operator, the first cell is not used for other uses, or the first cell is not used for future use.
  • the transceiver module 510 is further configured to: send a first message when the relay state information of the first terminal includes providing a relay service, and the first message carries the connection information of the first cell. Incoming state information and reserved state information of the first cell, and/or information about whether the second terminal is allowed to camp on the first cell.
  • the transceiving module 510 is further configured to: not send the first message when the relay state information of the first terminal includes not providing relay service.
  • the transceiver module 510 is further configured to: receive a request message from the second terminal, the request message is used to discover the first terminal providing the relay service, and the request message carries the information of the second terminal
  • the access identity AI the processing module 520 is further configured to: determine whether the second terminal is allowed to camp on the first cell according to the AI of the second terminal and the system information.
  • the communication device 500 may specifically be the first terminal in the above embodiment, and the communication device 500 may be used to perform the above method 200, method 300 or method 400 and the first terminal Each process and/or steps corresponding to a terminal are not repeated here to avoid repetition.
  • the communications apparatus 500 is a second terminal, or a chip in the second terminal.
  • the transceiver module 510 is configured to receive first indication information from the first terminal, where the first indication information is used to indicate disconnection between the first terminal and the second terminal.
  • a side link, or, the first indication information is used to indicate that the second terminal cannot camp on the first cell of the network device;
  • the processing module 520 is configured to disconnect the A sidelink between the first terminal and the second terminal.
  • processing module 520 is further configured to: establish the sidelink.
  • the processing module 520 is further configured to: select a third terminal or reselect a second cell of the network device, where the third terminal is a relay device for connecting the second terminal to the network device.
  • the transceiver module 510 is configured to receive a first message from the first terminal, the first message carrying information about the access state of the first cell of the network device and the first cell Reservation status information, and/or information about whether the second terminal is allowed to camp on the first cell; a processing module 520, configured to determine, according to the first message, that the second terminal camps on the first cell Capability information of a cell, where the capability information of camping on the first cell includes camping on the first cell or being unable to camp on the first cell.
  • the access state information of the first cell includes information indicating that the first cell is in an access-forbidden state or information that is not in an access-forbidden state.
  • the first cell reservation status information is used to indicate the reservation status of the first cell, where the reservation status includes one or more of the following: the first cell is reserved for operation commercial use, the first cell is not for other use, or the first cell is not for future use.
  • the transceiver module 510 is further configured to: send a request message to the first terminal, the request message is used to discover the first terminal providing the relay service, and the request message carries the access information of the second terminal Identify AI.
  • the communication device 500 may specifically be the second terminal in the above embodiment, and the communication device 500 may be used to perform the above method 200, method 300 or method 400 and the second terminal The processes and/or steps corresponding to the two terminals are not repeated here to avoid repetition.
  • the communication device 500 here is embodied in the form of functional modules.
  • module here may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (such as a shared processor, a dedicated processor, or a group processor, etc.) and memory, incorporated logic, and/or other suitable components to support the described functionality.
  • ASIC application specific integrated circuit
  • the communication device 500 may be used to execute various processes and/or steps corresponding to the first terminal in the above method embodiments, or the communication device 500 may be used to perform various processes and/or steps corresponding to the second terminal in the above method embodiments or steps, in order to avoid repetition, no more details are given here.
  • the above-mentioned communication device 500 has the function of implementing the corresponding steps performed by the first terminal or the second terminal in the above-mentioned method 200, method 300 or method 400; the above-mentioned functions can be realized by hardware, and can also be realized by executing corresponding software by hardware.
  • the hardware or software includes one or more modules corresponding to the above functions.
  • the communication device 500 in FIG. 5 may also be a chip or a chip system, for example: a system on chip (system on chip, SoC), which is not limited in this application.
  • SoC system on chip
  • FIG. 6 shows another communication device 600 provided by the embodiment of the present application.
  • the communication device 600 includes a processor 610 , a memory 620 and a transceiver 630 .
  • the processor 610, the memory 620 and the transceiver 630 are connected through an internal connection path, the memory 620 is used to store instructions, and the processor 610 is used to execute the instructions stored in the memory 620, so that the communication device 600 can execute the above method.
  • the relay communication method 200, method 300 or method 400 provided by example.
  • the functions of the communication device 500 in the above embodiments may be integrated into the communication device 600, and the communication device 600 may be used to execute various steps and/or processes corresponding to the terminal device in the above method embodiments, or the communication device 600 may also It can be used to execute various steps and/or processes corresponding to the network device in the foregoing method embodiments.
  • the memory 620 may include read-only memory and random-access memory, and provides instructions and data to the processor. A portion of the memory may also include non-volatile random access memory. For example, the memory may also store device type information.
  • the processor 610 may be used to execute instructions stored in the memory, and when the processor executes the instructions, the processor 610 may execute the various steps and/or processes corresponding to the terminal device in the above method embodiments, or the processor 610 may execute various steps and/or processes corresponding to network devices in the foregoing method embodiments.
  • the processor 610 may be a central processing unit (central processing unit, CPU), and the processor 610 may also be other general-purpose processors, digital signal processors (digital signal process, DSP) , application specific integrated circuit (ASIC), field programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.
  • the processor 610 may be a microprocessor or any conventional processor or the like.
  • each step of the above method 200, method 300, or method 400 may be implemented by an integrated logic circuit of hardware in a processor or instructions in the form of software.
  • the steps of the methods disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules in the processor.
  • the software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, register.
  • the storage medium is located in the memory, and the processor executes the instructions in the memory, and completes the steps of the above method in combination with its hardware. To avoid repetition, no detailed description is given here.
  • the present application also provides a computer-readable medium on which a computer program is stored, and when the computer program is executed by a computer, the functions of any one of the above method embodiments are realized.
  • the present application also provides a computer program product, which implements the functions of any one of the above method embodiments when executed by a computer.
  • all or part of them may be implemented by software, hardware, firmware or any combination thereof.
  • software When implemented using software, it may be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on the computer, the processes or functions according to the embodiments of the present application will be generated in whole or in part.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website, computer, server or data center Transmission to another website site, computer, server or data center by wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.).
  • the computer-readable storage medium may be any available medium that can be accessed by a computer, or a data storage device such as a server, a data center, etc. integrated with one or more available media.
  • the available medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a high-density digital video disc (digital video disc, DVD)), or a semiconductor medium (for example, a solid state disk (solid state disk, SSD)) etc.
  • a magnetic medium for example, a floppy disk, a hard disk, a magnetic tape
  • an optical medium for example, a high-density digital video disc (digital video disc, DVD)
  • a semiconductor medium for example, a solid state disk (solid state disk, SSD)
  • the disclosed systems, devices and methods may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.
  • the functions described above are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the present application is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disk or optical disc and other media that can store program codes. .

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Databases & Information Systems (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente demande concerne un procédé de communication par relais, un appareil de communication et un système de communication, qui améliorent efficacement l'efficacité d'un terminal distant accédant à une cellule d'un dispositif de réseau. Le procédé est appliqué à un système de communication qui comprend un premier terminal, un deuxième terminal et un troisième terminal, et le premier terminal est un dispositif de relais permettant au deuxième terminal d'accéder au dispositif de réseau. Les procédés comprennent les étapes suivantes : un premier terminal reçoit des informations de système en provenance d'un dispositif de réseau, et détermine, en fonction des informations de système reçues, qu'un deuxième terminal ne peut pas résider dans une première cellule du dispositif de réseau ; le premier terminal envoie des premières informations d'indication au deuxième terminal ; les premières informations d'indication étant utilisées pour indiquer de déconnecter la liaison latérale entre le premier terminal et le deuxième terminal, ou les premières informations d'indication étant utilisées pour indiquer que le deuxième terminal ne peut pas résider dans la première cellule.
PCT/CN2022/109532 2021-08-04 2022-08-01 Procédé de communication par relais, appareil de communication et système de communication WO2023011424A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AU2022321483A AU2022321483A1 (en) 2021-08-04 2022-08-01 Relay communication method, communication apparatus, and communication system
JP2024506873A JP2024527154A (ja) 2021-08-04 2022-08-01 中継通信方法、通信装置及び通信システム
EP22852136.5A EP4373164A1 (fr) 2021-08-04 2022-08-01 Procédé de communication par relais, appareil de communication et système de communication
BR112024002211A BR112024002211A2 (pt) 2021-08-04 2022-08-01 Método de comunicação de retransmissão, aparelho de comunicação e sistema de comunicação
US18/431,387 US20240179776A1 (en) 2021-08-04 2024-02-02 Relay communication method, communication apparatus, and communication system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202110892634.2A CN115942431A (zh) 2021-08-04 2021-08-04 中继通信方法、通信装置和通信系统
CN202110892634.2 2021-08-04

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EP (1) EP4373164A1 (fr)
JP (1) JP2024527154A (fr)
CN (1) CN115942431A (fr)
AU (1) AU2022321483A1 (fr)
BR (1) BR112024002211A2 (fr)
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US20230403637A1 (en) * 2022-06-10 2023-12-14 Microsoft Technology Licensing Llc Enhanced wireless transmission system
CN117528702A (zh) * 2022-07-29 2024-02-06 华为技术有限公司 一种通信方法、通信装置及计算机可读存储介质

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CN106211261A (zh) * 2015-04-10 2016-12-07 中兴通讯股份有限公司 信息处理方法及通信节点
CN106465225A (zh) * 2015-04-03 2017-02-22 华为技术有限公司 数据传输的方法、用户设备和基站
US20180295534A1 (en) * 2015-05-14 2018-10-11 Zte Corporation Method for Processing Information, and Communication Node
CN111527770A (zh) * 2020-04-02 2020-08-11 北京小米移动软件有限公司 信息传输方法、装置、通信设备及存储介质
CN111818610A (zh) * 2017-02-01 2020-10-23 华为技术有限公司 一种用于接入禁止的系统和方法

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CN106465225A (zh) * 2015-04-03 2017-02-22 华为技术有限公司 数据传输的方法、用户设备和基站
CN106211261A (zh) * 2015-04-10 2016-12-07 中兴通讯股份有限公司 信息处理方法及通信节点
US20180295534A1 (en) * 2015-05-14 2018-10-11 Zte Corporation Method for Processing Information, and Communication Node
CN111818610A (zh) * 2017-02-01 2020-10-23 华为技术有限公司 一种用于接入禁止的系统和方法
CN111527770A (zh) * 2020-04-02 2020-08-11 北京小米移动软件有限公司 信息传输方法、装置、通信设备及存储介质

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JP2024527154A (ja) 2024-07-19
BR112024002211A2 (pt) 2024-04-30
EP4373164A1 (fr) 2024-05-22
AU2022321483A1 (en) 2024-02-22
CN115942431A (zh) 2023-04-07

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